Move from TSLint to ESLint

TSLint is deprecated, moving to ESLint as modern standard. Read more here: https://github.com/typescript-eslint/tslint-to-eslint-config/blob/master/docs/FAQs.md

.eslintrc.js

@@ -0,0 +1,29 @@
+module.exports = {
+  parser: '@typescript-eslint/parser', // Specifies the ESLint parser
+  plugins: ['react', 'react-native'],
+  parserOptions: {
+    ecmaVersion: 2020, // Allows for the parsing of modern ECMAScript features
+    sourceType: 'module', // Allows for the use of imports
+    ecmaFeatures: {
+      jsx: true, // Allows for the parsing of JSX
+    },
+  },
+  settings: {
+    react: {
+      version: 'detect', // Tells eslint-plugin-react to automatically detect the version of React to use
+    },
+  },
+
+  extends: [
+    'plugin:react/recommended',
+    'plugin:react-native/all',
+    'plugin:@typescript-eslint/recommended', // Uses the recommended rules from the @typescript-eslint/eslint-plugin
+    'prettier/@typescript-eslint', // Uses eslint-config-prettier to disable ESLint rules from @typescript-eslint/eslint-plugin that would conflict with prettier
+    'plugin:prettier/recommended', // Enables eslint-plugin-prettier and eslint-config-prettier. This will display prettier errors as ESLint errors. Make sure this is always the last configuration in the extends array.
+  ],
+
+  rules: {
+    // Place to specify ESLint rules. Can be used to overwrite rules specified from the extended configs
+    // e.g. "@typescript-eslint/explicit-function-return-type": "off",
+  },
+};

.prettierrc

@@ -6,7 +6,7 @@
   "semi": true,
   "singleQuote": true,
   "tabWidth": 2,
-  "trailingComma": "none",
+  "trailingComma": "es5",
   "useTabs": false,
   "overrides": [
     {